Retrieving Foliar Biochemical Components with Statistical and Physical Models

Based on comparison of retrieving foliar biochemicalcomponents with statistical,physical and their united models, the results show that physical model is better than statistical one in retrieving chlorophyll and water contents, and statistical model is better than physical model in retrieving protein and cellulose plus lignin contents. Three united models derived from physical model have increased the precision of retrieving protein and cellulose plus lignin content, but can not achieve better results than statistical model. As for different groups of samples are concerned, there are different effects in retrieving foliar biochemical components especially for statistical model.